Card



5, 1968 A. s. VINOGRADOV ETAL 3,395,425

CARD

Filed Nov. 9, 1966 2 Sheets-Sheet 1 A. s. VINOGRADOV ETAL 3,395,425

Aug. 6, 1968 CARD 2 Sheets-Sheet 2 Filed Nov. 9, 1966 IIIIIIIIIIIIIII;

4 G I F United States Patent:

3,395,425 CARD Alexandr Sergeevich Vinogradov, ulitsa Krasuykh Zor, 400kvart. dom, kv. 311, Jury Mikhilovich Kapustin, ulitsa Proletarskaya 2,kv. 91, Ilya Nikolaevich Maxjutenko, ulitsa 2 Lagernaya, 50, kv. 35,Vladimir Nikolevich Kiselnikov, ulitsa Malaya Khutorovskay 5, kv. 20,Igor Sergeevich Borisov, ulitsa 2 Lagernaya, 42, kv. 3, and IvanMikhailovich Mazalov, Sosuevo, 7 proezd, 57, kv. 8, all of Ivanovo,U.S.S.R.

Filed Nov. 9, 1966, Ser. No. 593,052 3 Claims. (Cl. 19--105) ABSTRACT OFTHE DISCLOSURE A card machine in which one part of a pan is arrangedbeneath the receiver cylinder and extends in part below the transfercylinder up to a pair of operating rollers arranged beneath the transfercylinder, second part of the pan extending as a shield between the pairof working cylinders and the main cylinder and adjustable between therollers and main cylinder.

The present invention relates to devices for carding and cleaning cottonfibers, and more particularly to cards used in the textile industry.

There is already known a card which comprises a receiver unitconstituted of a toothed receiver cylinder and a toothed transfercylinder enclosed in a, housing and arranged in a horizontal plane, andwherein a trash stripper knife is arranged in the working zone of thefeeding table (see, for instance, 'Patent No. 96,750, class 75b, 10,issued in the U.S.S.R.).

The disadvantage presented by this card is the low cleaning capacity ofthe receiver unit which affects the efficiency of the card and impairscarding quality.

Moreover, the receiver cylinder and transfer cylinder which are enclosedin a housing do not ensure stabilization, normal outlet and eliminationof air currents affecting the structure of the web transferred to themain cylinder and the efficiency of the card as 'a whole.

The principal object of the present invention is the provision of a cardhaving a receiver unit of a high carding capacity ensuring a goodstabilization and a normal outlet of air currents, and a good quality ofweb at a high card efficiency.

Having in view the aforementioned and other objects, the present card isprovided with a receiver unit comprising a toothed receiver cylinder anda toothed transfer cylinder enclosed in a housing and arranged in ahorizontal plane and a trash stripper knife disposed in the zone of themachine feeding table.

According to the invention, a pair of operating rollers is arrangedunder the transfer cylinder, and at the top between the cylinders thereis provided a knife which together with a pan enveloping the cylindersfrom the bottom, changes the distribution of the directed air flow.

It has proved expedient to make the pan of two parts, one of which isdisposed under the receiver cylinder and carries the trash stripperknife and partly occupies the space under the transfer cylinder up tothe pair of operating rollers.

The other part of the pan is made as a shield arranged between the pairof operating rollers and the main cylinder and adjustable between thepair of operating rollers and the main cylinder. The knife between thecylinder has a wedge shape with exterior surfaces concentric relative tothe surfaces of the cylinders, and in cross section it has a beveldefining an asymmetrical shape allowing the approach of the knife bladeto the receiver cylinder.

3,395,425 Patented Aug. 6, 1968 In the proposed card, the receiver unitensures good carding and cleaning of fibers, is reliable in operationand convenient in exploitation and ensures stable operation of the cardand high efficiency thereof.

Other objects and advantages presented by the present invention will berendered more fully apparent by the following description of anexemplary embodiment of the card, taken in conjunction with theaccompanying drawings, wherein:

FIG. 1 is a diagrammatic illustration of the card according to theinvention;

FIG. 2 is a diagrammatic illustration partly in section of the receiverunit according to the invention;

FIG. 3 is a side view of a knife according to the invention; and

FIG. 4 is a cross-sectional view, taken along the line IV-IV in FIG. 3.

A receiver unit 10 comprising a receiver cylinder 11 (FIG. 2) and atransfer cylinder 12 disposed on the card framework 13 in one horizontalplane, is installed on a card constituted of a feeding unit (FIG. 1), amain cylinder 2, belts 3, a belt stripping arrangement 4, a doifer 5, adoffing comb 6, delivery rollers 7, and a coiler 8 for coiling the lapinto a container 9.

In order to increase the carding efficiency of the receiver unit 10,there is provided under the transfer cylinder 12, a pair of operatingrollers composed of a working roller 14 and a cleaning roller 15.

The receiver cylinder 11 and transfer cylinder 12 are closed from thetop with a housing composed of two segments 16 and 17, and from thebottom the cylinders are enveloped by a pan.

The pan is made up of two parts 18 and 19 manufactured of solid sheetswithout perforations.

The part 18 of the pan is disposed under the receiver cylinder 11 andpartly under the transfer cylinder 12 up to the pair of operatingrollers 14 and 15. The other part 19 of the pan is made as a shieldarrange-d on the framework 13 between the pair of operating rollers andthe main cylinder 2 with the possibility of adjusting the position ofthe shield between the pair of rollers 14, 15 and the main cylinder 2 bymeans of adjustment of the engagement of bolts 20 in elongated slots 21,as shown in FIG. 2. This adjustment is necessary when carding varioustypes of cotton fibers.

On the part 18 of the pan, in the zone of the feeding table 22, there isarranged a trash stripper knife with a device 24 for adjusting its reachrelative the feeding table 22 and receiver cylinder 11.

The surface of part 18 of the pan is concentric relative to the surfacesof the transfer cylinder 12 and receiver cylinder 11; a protrusion 25 iswedged in the space be tween the cylinders 11 and 12.

At the top between the cylinders 11 and 12 (FIG. 2) there is arranged aknife 26 resting on the framework 13.

The knife 26 (FIG. 3) is constituted as a wedge with exterior surfaces Aand B (FIGS. 3 and 4) concentric relative to the surfaces of cylinders11 and 12.

The knife blade is formed with a surface A facing the receiver cylinder11, and a surface B which faces the transfer cylinder 12 and a bevel isformed at the lower end of surface B as shown in FIG. 4. Owing to thisarrangement, the cross section of the knife 26 has an asymmetrical shapewhich allows placement of the knife blade closer to the receiver 11. Thegap between the blade of the knife 26 and the fillet of the cylinder 11is considerably smaller than the clearance between the cutting edge ofthe knife 26 and the fillet of the transfer cylinder 12 when it is mostdeeply set between the cylinders. This permits a greater travel of theknife 26 towards the transfer cylinder in the event that a tuft of fiberis passed. Thereby, damage to the fillet of the transfer cylinder 12 isminimized. Additionally, the air flow is essentially blocked frompassing between the knife surface A and cylinder 11, thereby avoidinginterference with the passage of the web, whereas the air tends to flowbetween surface B and cylinder 12 in the direction of advance of theweb.

The shape of the knife together with the pan 18 is thereby capable ofchanging the distribution of air currents in the zone between thereceiver cylinder -11 and transfer cylinder 12.

The card operates in the following way: The lap (not shown in thedrawing) is fed along the feeding table 22 ('FIGS. 1 and 2) under thefeeding cylinder 27 which forwards it to the receiver unit 10.

There the lap is consecutively subjected to the action of the twocylinders 11 and 12, and of the pair of rollers 14 and 15.

The cylinders 11 and 12, as Well as rollers 14 and 15, are provided witha saw-toothed fillet.

The progressively fed cotton is carded by the teeth of the filletcovering on the receiver cylinder 11. During this operation, the cottonfibers are separated into small bits with elimination of foreignimpurities.

At the rapid rotation of the receiver cylinder 11, foreign impuritieswhich are heavier than the cotton fibers, will be thrown-off bycentrifugal forces from the teeth of the fillet on the cylinder 11,separated by the trash stripper knife 23 and finally fall under themachine.

The fibers from the cylinder 11 are grasped by the teeth of the filletof the transfer cylinder 12, which travel in a direction opposite tothat of the cylinder 11 Where they are contiguous and much slower.

Thereby, the fibers are additionally carded and equalized.

The transfer cylinder 12 passes the fibers onto the working roller 14;the fillet teeth of roller 14 are directed towards the teeth of thefillet of the transfer cylinder 12. The slowly rotating working roller14 grasps the fibers from the transfer cylinder 12 and passes them tothe cleaning roller 15, which, in its turn, strips the Working roller 14and transfers the fibers again onto the cylinder 12.

The rotational speed of the cleaning roller 15 is much faster than thespeed of the working roller 14, but much slower than the speed of thetransfer cylinder 12.

The fibers are transferred from the cylinder 12 onto the pair of rollers14, 15 until full carding of cotton fibers is obtained, and they aredistributed in a uniform layer through the full Width of the cylinder12, which considerably enhances the quality of sliver coming out of themachine.

This preliminary treatment of the fibers in the receiver unitfacilitates the operation of the main cylinder 2 with belts 3 (FIG. 1),which ensures parallelization of fibers and the elimination of thosefibers which contain foreign impurities.

Thus, the pair of rollers 14, 15 arranged under the transfer cylinder12, increases the carding capacity of the receiver unit 10.

During operation, on the surfaces of the rapidly rotating cylinder 11and transfer cylinder 12 considerable centrifugal forces are createdtending to throw-off the fibers from these cylinders. Air currentscreated by the rotation of the cylinder 11 and the transfer cylinder 12further tend to throw-off the fibers from the cylinders.

For eliminating undesirable air currents as well as for theirstabilization and avoidance of fiber ejection, the cutting edge of knife26 is placed as close as possible to the teeth of the fillet on thecylinder 11, and is at the same time deeply set in the gap between thecylinders 11 and l2. Due to this arrangement, in the upper part of thereceiver unit, the air currents produced by the rotation of cylinders 11and 12 are redistributed and follow the travel of the web; and as aresult, fiufiiness of the web is obtained, and no fibers are blown awayfrom the zone of the feeding table 22 and feeding cylinder 27.

'In the bottom part of the receiver unit 10, the air current is directedby the pan, so that it flows in the sense of rotation of the cylinder11, meeting in its path the protrusion 25 and then the knife 26 wherebyits speed is partially slowed down. The remaining part of the aircurrent is taken-up by the transfer cylinder 12 (traveling in oppositedirection to cylinder 11 where it is tangential thereto), and isdefinitely stopped in the zone of the rollers 14 and 15.

After the air flow has been stabilized in the zones between the workingroller and the main cylinder 2 (FIG. 1), as well as between the transfercylinder 12 and shield 19, the transfer cylinder 12 transfers the fibersto the main cylinder 2 without impairing the preset regularity and thestructure of the carded web.

The housing 16 and 17 closes the receiver and transfer cylinders and theknife 26 from above, thus protecting the unit 10 from spontaneousejection of fibers and dusting.

Further the operation of the card is effected in the usual way, i.e.,the fibers fed onto the main cylinder 2 are subjected to cleaning,carding and parallelization by the co-action of needles of the fillet onthe main cylinder 2 with the needles of belts 3.

Non-carded fibers as well as fibers containing foreign impurities areremoved by the belts 3 and eliminated by the device 4 as fiat strips.Carded fibers are transferred by the main cylinder 2 to the doffercylinder 5, from which the fibers are doffed by the comb 6, and areformed into a sliver by the delivery mechanism 7 and coiled by coiler 8into the container 9.

We claim:

1. In a card having a main cylinder, a receiver unit comprising areceiver cylinder; a transfer cylinder disposed downstream of thereceiver cylinder in the same horizontal plane therewith; at least onepair of operating rollers located under the transfer cylinder andcoacting with the latter; a feeding table arranged before the receivercylinder for feeding a lap thereto; trash stripper means arranged in theregion of the feeding table; a pan enveloping the receiver and transfercylinders from below; a housing covering the receiver and transfercylinders from above and a knife installed from above between thereceiver and transfer cylinders and cooperating with the pan and housingto effect a re-distribution of the air flow, said pan being constitutedof two parts, one of which is arranged under the receiver cylinder andcarries the trash stripper means, and partly occupies the space underthe transfer cylinder up to the pair of operating rollers, the otherpart of the pan being a shieid arranged between the pair of operatingrollers and the main cylinder and having means for adjusting theposition of the shield between the pair of rollers and the maincylinder.

2. A card as claimed in claim 1 wherein said knife has a wedge shapewith surfaces respectively concentric to the receiver and transfercylinders, said knife having a bevel edge on the surface concentric withthe transfer cylinder and being placed closer to the receiver cylinderthan the transfer cylinder.

3. A card as claimed in claim 1 wherein one of the pair of operatingrollers is a working roller having teeth thereon and the other roller isa cleaning roller.

References Cited UNITED STATES PATENTS 300,284 6/ 1884 Rudiger 19-1002,949,645 8/ 1960 Nod'a 19-105 3,144,684 8/1964 Aoki 19105 FOREIGNPATENTS 130,808 12/1959 U.S.S.R.

821,074 8/1937 France.

MERVIN STEIN, Primary Examiner.

I. C. WADDEY, Assistant Examiner.

